drivers/net/wireless/libertas/cfg.c

   1 /*
   2  * Implement cfg80211 ("iw") support.
   3  *
   4  * Copyright (C) 2009 M&N Solutions GmbH, 61191 Rosbach, Germany
   5  * Holger Schurig <[email protected]>
   6  *
   7  */
   8
   9 #include <linux/sched.h>
  10 #include <linux/wait.h>
  11 #include <linux/slab.h>
  12 #include <linux/ieee80211.h>
  13 #include <net/cfg80211.h>
  14 #include <asm/unaligned.h>
  15
  16 #include "decl.h"
  17 #include "cfg.h"
  18 #include "cmd.h"
  19
  20
  21 #define CHAN2G(_channel, _freq, _flags) {        \
  22         .band             = IEEE80211_BAND_2GHZ, \
  23         .center_freq      = (_freq),             \
  24         .hw_value         = (_channel),          \
  25         .flags            = (_flags),            \
  26         .max_antenna_gain = 0,                   \
  27         .max_power        = 30,                  \
  28 }
  29
  30 static struct ieee80211_channel lbs_2ghz_channels[] = {
  31         CHAN2G(1,  2412, 0),
  32         CHAN2G(2,  2417, 0),
  33         CHAN2G(3,  2422, 0),
  34         CHAN2G(4,  2427, 0),
  35         CHAN2G(5,  2432, 0),
  36         CHAN2G(6,  2437, 0),
  37         CHAN2G(7,  2442, 0),
  38         CHAN2G(8,  2447, 0),
  39         CHAN2G(9,  2452, 0),
  40         CHAN2G(10, 2457, 0),
  41         CHAN2G(11, 2462, 0),
  42         CHAN2G(12, 2467, 0),
  43         CHAN2G(13, 2472, 0),
  44         CHAN2G(14, 2484, 0),
  45 };
  46
  47 #define RATETAB_ENT(_rate, _hw_value, _flags) { \
  48         .bitrate  = (_rate),                    \
  49         .hw_value = (_hw_value),                \
  50         .flags    = (_flags),                   \
  51 }
  52
  53
  54 /* Table 6 in section 3.2.1.1 */
  55 static struct ieee80211_rate lbs_rates[] = {
  56         RATETAB_ENT(10,  0,  0),
  57         RATETAB_ENT(20,  1,  0),
  58         RATETAB_ENT(55,  2,  0),
  59         RATETAB_ENT(110, 3,  0),
  60         RATETAB_ENT(60,  9,  0),
  61         RATETAB_ENT(90,  6,  0),
  62         RATETAB_ENT(120, 7,  0),
  63         RATETAB_ENT(180, 8,  0),
  64         RATETAB_ENT(240, 9,  0),
  65         RATETAB_ENT(360, 10, 0),
  66         RATETAB_ENT(480, 11, 0),
  67         RATETAB_ENT(540, 12, 0),
  68 };
  69
  70 static struct ieee80211_supported_band lbs_band_2ghz = {
  71         .channels = lbs_2ghz_channels,
  72         .n_channels = ARRAY_SIZE(lbs_2ghz_channels),
  73         .bitrates = lbs_rates,
  74         .n_bitrates = ARRAY_SIZE(lbs_rates),
  75 };
  76
  77
  78 static const u32 cipher_suites[] = {
  79         WLAN_CIPHER_SUITE_WEP40,
  80         WLAN_CIPHER_SUITE_WEP104,
  81         WLAN_CIPHER_SUITE_TKIP,
  82         WLAN_CIPHER_SUITE_CCMP,
  83 };
  84
  85 /* Time to stay on the channel */
  86 #define LBS_DWELL_PASSIVE 100
  87 #define LBS_DWELL_ACTIVE  40
  88
  89
  90 /***************************************************************************
  91  * Misc utility functions
  92  *
  93  * TLVs are Marvell specific. They are very similar to IEs, they have the
  94  * same structure: type, length, data*. The only difference: for IEs, the
  95  * type and length are u8, but for TLVs they're __le16.
  96  */
  97
  98 /*
  99  * Convert NL80211's auth_type to the one from Libertas, see chapter 5.9.1
 100  * in the firmware spec
 101  */
 102 static u8 lbs_auth_to_authtype(enum nl80211_auth_type auth_type)
 103 {
 104         int ret = -ENOTSUPP;
 105
 106         switch (auth_type) {
 107         case NL80211_AUTHTYPE_OPEN_SYSTEM:
 108         case NL80211_AUTHTYPE_SHARED_KEY:
 109                 ret = auth_type;
 110                 break;
 111         case NL80211_AUTHTYPE_AUTOMATIC:
 112                 ret = NL80211_AUTHTYPE_OPEN_SYSTEM;
 113                 break;
 114         case NL80211_AUTHTYPE_NETWORK_EAP:
 115                 ret = 0x80;
 116                 break;
 117         default:
 118                 /* silence compiler */
 119                 break;
 120         }
 121         return ret;
 122 }
 123
 124
 125 /* Various firmware commands need the list of supported rates, but with
 126    the hight-bit set for basic rates */
 127 static int lbs_add_rates(u8 *rates)
 128 {
 129         size_t i;
 130
 131         for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
 132                 u8 rate = lbs_rates[i].bitrate / 5;
 133                 if (rate == 0x02 || rate == 0x04 ||
 134                     rate == 0x0b || rate == 0x16)
 135                         rate |= 0x80;
 136                 rates[i] = rate;
 137         }
 138         return ARRAY_SIZE(lbs_rates);
 139 }
 140
 141
 142 /***************************************************************************
 143  * TLV utility functions
 144  *
 145  * TLVs are Marvell specific. They are very similar to IEs, they have the
 146  * same structure: type, length, data*. The only difference: for IEs, the
 147  * type and length are u8, but for TLVs they're __le16.
 148  */
 149
 150
 151 /*
 152  * Add ssid TLV
 153  */
 154 #define LBS_MAX_SSID_TLV_SIZE                   \
 155         (sizeof(struct mrvl_ie_header)          \
 156          + IEEE80211_MAX_SSID_LEN)
 157
 158 static int lbs_add_ssid_tlv(u8 *tlv, const u8 *ssid, int ssid_len)
 159 {
 160         struct mrvl_ie_ssid_param_set *ssid_tlv = (void *)tlv;
 161
 162         /*
 163          * TLV-ID SSID  00 00
 164          * length       06 00
 165          * ssid         4d 4e 54 45 53 54
 166          */
 167         ssid_tlv->header.type = cpu_to_le16(TLV_TYPE_SSID);
 168         ssid_tlv->header.len = cpu_to_le16(ssid_len);
 169         memcpy(ssid_tlv->ssid, ssid, ssid_len);
 170         return sizeof(ssid_tlv->header) + ssid_len;
 171 }
 172
 173
 174 /*
 175  * Add channel list TLV (section 8.4.2)
 176  *
 177  * Actual channel data comes from priv->wdev->wiphy->channels.
 178  */
 179 #define LBS_MAX_CHANNEL_LIST_TLV_SIZE                                   \
 180         (sizeof(struct mrvl_ie_header)                                  \
 181          + (LBS_SCAN_BEFORE_NAP * sizeof(struct chanscanparamset)))
 182
 183 static int lbs_add_channel_list_tlv(struct lbs_private *priv, u8 *tlv,
 184                                     int last_channel, int active_scan)
 185 {
 186         int chanscanparamsize = sizeof(struct chanscanparamset) *
 187                 (last_channel - priv->scan_channel);
 188
 189         struct mrvl_ie_header *header = (void *) tlv;
 190
 191         /*
 192          * TLV-ID CHANLIST  01 01
 193          * length           0e 00
 194          * channel          00 01 00 00 00 64 00
 195          *   radio type     00
 196          *   channel           01
 197          *   scan type            00
 198          *   min scan time           00 00
 199          *   max scan time                 64 00
 200          * channel 2        00 02 00 00 00 64 00
 201          *
 202          */
 203
 204         header->type = cpu_to_le16(TLV_TYPE_CHANLIST);
 205         header->len  = cpu_to_le16(chanscanparamsize);
 206         tlv += sizeof(struct mrvl_ie_header);
 207
 208         /* lbs_deb_scan("scan: channels %d to %d\n", priv->scan_channel,
 209                      last_channel); */
 210         memset(tlv, 0, chanscanparamsize);
 211
 212         while (priv->scan_channel < last_channel) {
 213                 struct chanscanparamset *param = (void *) tlv;
 214
 215                 param->radiotype = CMD_SCAN_RADIO_TYPE_BG;
 216                 param->channumber =
 217                         priv->scan_req->channels[priv->scan_channel]->hw_value;
 218                 if (active_scan) {
 219                         param->maxscantime = cpu_to_le16(LBS_DWELL_ACTIVE);
 220                 } else {
 221                         param->chanscanmode.passivescan = 1;
 222                         param->maxscantime = cpu_to_le16(LBS_DWELL_PASSIVE);
 223                 }
 224                 tlv += sizeof(struct chanscanparamset);
 225                 priv->scan_channel++;
 226         }
 227         return sizeof(struct mrvl_ie_header) + chanscanparamsize;
 228 }
 229
 230
 231 /*
 232  * Add rates TLV
 233  *
 234  * The rates are in lbs_bg_rates[], but for the 802.11b
 235  * rates the high bit is set. We add this TLV only because
 236  * there's a firmware which otherwise doesn't report all
 237  * APs in range.
 238  */
 239 #define LBS_MAX_RATES_TLV_SIZE                  \
 240         (sizeof(struct mrvl_ie_header)          \
 241          + (ARRAY_SIZE(lbs_rates)))
 242
 243 /* Adds a TLV with all rates the hardware supports */
 244 static int lbs_add_supported_rates_tlv(u8 *tlv)
 245 {
 246         size_t i;
 247         struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
 248
 249         /*
 250          * TLV-ID RATES  01 00
 251          * length        0e 00
 252          * rates         82 84 8b 96 0c 12 18 24 30 48 60 6c
 253          */
 254         rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
 255         tlv += sizeof(rate_tlv->header);
 256         i = lbs_add_rates(tlv);
 257         tlv += i;
 258         rate_tlv->header.len = cpu_to_le16(i);
 259         return sizeof(rate_tlv->header) + i;
 260 }
 261
 262 /* Add common rates from a TLV and return the new end of the TLV */
 263 static u8 *
 264 add_ie_rates(u8 *tlv, const u8 *ie, int *nrates)
 265 {
 266         int hw, ap, ap_max = ie[1];
 267         u8 hw_rate;
 268
 269         /* Advance past IE header */
 270         ie += 2;
 271
 272         lbs_deb_hex(LBS_DEB_ASSOC, "AP IE Rates", (u8 *) ie, ap_max);
 273
 274         for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
 275                 hw_rate = lbs_rates[hw].bitrate / 5;
 276                 for (ap = 0; ap < ap_max; ap++) {
 277                         if (hw_rate == (ie[ap] & 0x7f)) {
 278                                 *tlv++ = ie[ap];
 279                                 *nrates = *nrates + 1;
 280                         }
 281                 }
 282         }
 283         return tlv;
 284 }
 285
 286 /*
 287  * Adds a TLV with all rates the hardware *and* BSS supports.
 288  */
 289 static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss)
 290 {
 291         struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
 292         const u8 *rates_eid, *ext_rates_eid;
 293         int n = 0;
 294
 295         rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
 296         ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
 297
 298         /*
 299          * 01 00                   TLV_TYPE_RATES
 300          * 04 00                   len
 301          * 82 84 8b 96             rates
 302          */
 303         rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
 304         tlv += sizeof(rate_tlv->header);
 305
 306         /* Add basic rates */
 307         if (rates_eid) {
 308                 tlv = add_ie_rates(tlv, rates_eid, &n);
 309
 310                 /* Add extended rates, if any */
 311                 if (ext_rates_eid)
 312                         tlv = add_ie_rates(tlv, ext_rates_eid, &n);
 313         } else {
 314                 lbs_deb_assoc("assoc: bss had no basic rate IE\n");
 315                 /* Fallback: add basic 802.11b rates */
 316                 *tlv++ = 0x82;
 317                 *tlv++ = 0x84;
 318                 *tlv++ = 0x8b;
 319                 *tlv++ = 0x96;
 320                 n = 4;
 321         }
 322
 323         rate_tlv->header.len = cpu_to_le16(n);
 324         return sizeof(rate_tlv->header) + n;
 325 }
 326
 327
 328 /*
 329  * Add auth type TLV.
 330  *
 331  * This is only needed for newer firmware (V9 and up).
 332  */
 333 #define LBS_MAX_AUTH_TYPE_TLV_SIZE \
 334         sizeof(struct mrvl_ie_auth_type)
 335
 336 static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
 337 {
 338         struct mrvl_ie_auth_type *auth = (void *) tlv;
 339
 340         /*
 341          * 1f 01  TLV_TYPE_AUTH_TYPE
 342          * 01 00  len
 343          * 01     auth type
 344          */
 345         auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
 346         auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
 347         auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
 348         return sizeof(*auth);
 349 }
 350
 351
 352 /*
 353  * Add channel (phy ds) TLV
 354  */
 355 #define LBS_MAX_CHANNEL_TLV_SIZE \
 356         sizeof(struct mrvl_ie_header)
 357
 358 static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
 359 {
 360         struct mrvl_ie_ds_param_set *ds = (void *) tlv;
 361
 362         /*
 363          * 03 00  TLV_TYPE_PHY_DS
 364          * 01 00  len
 365          * 06     channel
 366          */
 367         ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
 368         ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
 369         ds->channel = channel;
 370         return sizeof(*ds);
 371 }
 372
 373
 374 /*
 375  * Add (empty) CF param TLV of the form:
 376  */
 377 #define LBS_MAX_CF_PARAM_TLV_SIZE               \
 378         sizeof(struct mrvl_ie_header)
 379
 380 static int lbs_add_cf_param_tlv(u8 *tlv)
 381 {
 382         struct mrvl_ie_cf_param_set *cf = (void *)tlv;
 383
 384         /*
 385          * 04 00  TLV_TYPE_CF
 386          * 06 00  len
 387          * 00     cfpcnt
 388          * 00     cfpperiod
 389          * 00 00  cfpmaxduration
 390          * 00 00  cfpdurationremaining
 391          */
 392         cf->header.type = cpu_to_le16(TLV_TYPE_CF);
 393         cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
 394         return sizeof(*cf);
 395 }
 396
 397 /*
 398  * Add WPA TLV
 399  */
 400 #define LBS_MAX_WPA_TLV_SIZE                    \
 401         (sizeof(struct mrvl_ie_header)          \
 402          + 128 /* TODO: I guessed the size */)
 403
 404 static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
 405 {
 406         size_t tlv_len;
 407
 408         /*
 409          * We need just convert an IE to an TLV. IEs use u8 for the header,
 410          *   u8      type
 411          *   u8      len
 412          *   u8[]    data
 413          * but TLVs use __le16 instead:
 414          *   __le16  type
 415          *   __le16  len
 416          *   u8[]    data
 417          */
 418         *tlv++ = *ie++;
 419         *tlv++ = 0;
 420         tlv_len = *tlv++ = *ie++;
 421         *tlv++ = 0;
 422         while (tlv_len--)
 423                 *tlv++ = *ie++;
 424         /* the TLV is two bytes larger than the IE */
 425         return ie_len + 2;
 426 }
 427
 428 /***************************************************************************
 429  * Set Channel
 430  */
 431
 432 static int lbs_cfg_set_channel(struct wiphy *wiphy,
 433         struct net_device *netdev,
 434         struct ieee80211_channel *channel,
 435         enum nl80211_channel_type channel_type)
 436 {
 437         struct lbs_private *priv = wiphy_priv(wiphy);
 438         int ret = -ENOTSUPP;
 439
 440         lbs_deb_enter_args(LBS_DEB_CFG80211, "freq %d, type %d",
 441                            channel->center_freq, channel_type);
 442
 443         if (channel_type != NL80211_CHAN_NO_HT)
 444                 goto out;
 445
 446         ret = lbs_set_channel(priv, channel->hw_value);
 447
 448  out:
 449         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
 450         return ret;
 451 }
 452
 453
 454
 455 /***************************************************************************
 456  * Scanning
 457  */
 458
 459 /*
 460  * When scanning, the firmware doesn't send a nul packet with the power-safe
 461  * bit to the AP. So we cannot stay away from our current channel too long,
 462  * otherwise we loose data. So take a "nap" while scanning every other
 463  * while.
 464  */
 465 #define LBS_SCAN_BEFORE_NAP 4
 466
 467
 468 /*
 469  * When the firmware reports back a scan-result, it gives us an "u8 rssi",
 470  * which isn't really an RSSI, as it becomes larger when moving away from
 471  * the AP. Anyway, we need to convert that into mBm.
 472  */
 473 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
 474         ((-(int)rssi + 3)*100)
 475
 476 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
 477         struct cmd_header *resp)
 478 {
 479         struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
 480         int bsssize;
 481         const u8 *pos;
 482         const u8 *tsfdesc;
 483         int tsfsize;
 484         int i;
 485         int ret = -EILSEQ;
 486
 487         lbs_deb_enter(LBS_DEB_CFG80211);
 488
 489         bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
 490
 491         lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
 492                         scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
 493
 494         if (scanresp->nr_sets == 0) {
 495                 ret = 0;
 496                 goto done;
 497         }
 498
 499         /*
 500          * The general layout of the scan response is described in chapter
 501          * 5.7.1. Basically we have a common part, then any number of BSS
 502          * descriptor sections. Finally we have section with the same number
 503          * of TSFs.
 504          *
 505          * cmd_ds_802_11_scan_rsp
 506          *   cmd_header
 507          *   pos_size
 508          *   nr_sets
 509          *   bssdesc 1
 510          *     bssid
 511          *     rssi
 512          *     timestamp
 513          *     intvl
 514          *     capa
 515          *     IEs
 516          *   bssdesc 2
 517          *   bssdesc n
 518          *   MrvlIEtypes_TsfFimestamp_t
 519          *     TSF for BSS 1
 520          *     TSF for BSS 2
 521          *     TSF for BSS n
 522          */
 523
 524         pos = scanresp->bssdesc_and_tlvbuffer;
 525
 526         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
 527                         scanresp->bssdescriptsize);
 528
 529         tsfdesc = pos + bsssize;
 530         tsfsize = 4 + 8 * scanresp->nr_sets;
 531         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
 532
 533         /* Validity check: we expect a Marvell-Local TLV */
 534         i = get_unaligned_le16(tsfdesc);
 535         tsfdesc += 2;
 536         if (i != TLV_TYPE_TSFTIMESTAMP) {
 537                 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
 538                 goto done;
 539         }
 540
 541         /* Validity check: the TLV holds TSF values with 8 bytes each, so
 542          * the size in the TLV must match the nr_sets value */
 543         i = get_unaligned_le16(tsfdesc);
 544         tsfdesc += 2;
 545         if (i / 8 != scanresp->nr_sets) {
 546                 lbs_deb_scan("scan response: invalid number of TSF timestamp "
 547                              "sets (expected %d got %d)\n", scanresp->nr_sets,
 548                              i / 8);
 549                 goto done;
 550         }
 551
 552         for (i = 0; i < scanresp->nr_sets; i++) {
 553                 const u8 *bssid;
 554                 const u8 *ie;
 555                 int left;
 556                 int ielen;
 557                 int rssi;
 558                 u16 intvl;
 559                 u16 capa;
 560                 int chan_no = -1;
 561                 const u8 *ssid = NULL;
 562                 u8 ssid_len = 0;
 563                 DECLARE_SSID_BUF(ssid_buf);
 564
 565                 int len = get_unaligned_le16(pos);
 566                 pos += 2;
 567
 568                 /* BSSID */
 569                 bssid = pos;
 570                 pos += ETH_ALEN;
 571                 /* RSSI */
 572                 rssi = *pos++;
 573                 /* Packet time stamp */
 574                 pos += 8;
 575                 /* Beacon interval */
 576                 intvl = get_unaligned_le16(pos);
 577                 pos += 2;
 578                 /* Capabilities */
 579                 capa = get_unaligned_le16(pos);
 580                 pos += 2;
 581
 582                 /* To find out the channel, we must parse the IEs */
 583                 ie = pos;
 584                 /* 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
 585                    interval, capabilities */
 586                 ielen = left = len - (6 + 1 + 8 + 2 + 2);
 587                 while (left >= 2) {
 588                         u8 id, elen;
 589                         id = *pos++;
 590                         elen = *pos++;
 591                         left -= 2;
 592                         if (elen > left || elen == 0) {
 593                                 lbs_deb_scan("scan response: invalid IE fmt\n");
 594                                 goto done;
 595                         }
 596
 597                         if (id == WLAN_EID_DS_PARAMS)
 598                                 chan_no = *pos;
 599                         if (id == WLAN_EID_SSID) {
 600                                 ssid = pos;
 601                                 ssid_len = elen;
 602                         }
 603                         left -= elen;
 604                         pos += elen;
 605                 }
 606
 607                 /* No channel, no luck */
 608                 if (chan_no != -1) {
 609                         struct wiphy *wiphy = priv->wdev->wiphy;
 610                         int freq = ieee80211_channel_to_frequency(chan_no,
 611                                                         IEEE80211_BAND_2GHZ);
 612                         struct ieee80211_channel *channel =
 613                                 ieee80211_get_channel(wiphy, freq);
 614
 615                         lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %s, "
 616                                      "%d dBm\n",
 617                                      bssid, capa, chan_no,
 618                                      print_ssid(ssid_buf, ssid, ssid_len),
 619                                      LBS_SCAN_RSSI_TO_MBM(rssi)/100);
 620
 621                         if (channel &&
 622                             !(channel->flags & IEEE80211_CHAN_DISABLED))
 623                                 cfg80211_inform_bss(wiphy, channel,
 624                                         bssid, le64_to_cpu(*(__le64 *)tsfdesc),
 625                                         capa, intvl, ie, ielen,
 626                                         LBS_SCAN_RSSI_TO_MBM(rssi),
 627                                         GFP_KERNEL);
 628                 } else
 629                         lbs_deb_scan("scan response: missing BSS channel IE\n");
 630
 631                 tsfdesc += 8;
 632         }
 633         ret = 0;
 634
 635  done:
 636         lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
 637         return ret;
 638 }
 639
 640
 641 /*
 642  * Our scan command contains a TLV, consting of a SSID TLV, a channel list
 643  * TLV and a rates TLV. Determine the maximum size of them:
 644  */
 645 #define LBS_SCAN_MAX_CMD_SIZE                   \
 646         (sizeof(struct cmd_ds_802_11_scan)      \
 647          + LBS_MAX_SSID_TLV_SIZE                \
 648          + LBS_MAX_CHANNEL_LIST_TLV_SIZE        \
 649          + LBS_MAX_RATES_TLV_SIZE)
 650
 651 /*
 652  * Assumes priv->scan_req is initialized and valid
 653  * Assumes priv->scan_channel is initialized
 654  */
 655 static void lbs_scan_worker(struct work_struct *work)
 656 {
 657         struct lbs_private *priv =
 658                 container_of(work, struct lbs_private, scan_work.work);
 659         struct cmd_ds_802_11_scan *scan_cmd;
 660         u8 *tlv; /* pointer into our current, growing TLV storage area */
 661         int last_channel;
 662         int running, carrier;
 663
 664         lbs_deb_enter(LBS_DEB_SCAN);
 665
 666         scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
 667         if (scan_cmd == NULL)
 668                 goto out_no_scan_cmd;
 669
 670         /* prepare fixed part of scan command */
 671         scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
 672
 673         /* stop network while we're away from our main channel */
 674         running = !netif_queue_stopped(priv->dev);
 675         carrier = netif_carrier_ok(priv->dev);
 676         if (running)
 677                 netif_stop_queue(priv->dev);
 678         if (carrier)
 679                 netif_carrier_off(priv->dev);
 680
 681         /* prepare fixed part of scan command */
 682         tlv = scan_cmd->tlvbuffer;
 683
 684         /* add SSID TLV */
 685         if (priv->scan_req->n_ssids)
 686                 tlv += lbs_add_ssid_tlv(tlv,
 687                                         priv->scan_req->ssids[0].ssid,
 688                                         priv->scan_req->ssids[0].ssid_len);
 689
 690         /* add channel TLVs */
 691         last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
 692         if (last_channel > priv->scan_req->n_channels)
 693                 last_channel = priv->scan_req->n_channels;
 694         tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
 695                 priv->scan_req->n_ssids);
 696
 697         /* add rates TLV */
 698         tlv += lbs_add_supported_rates_tlv(tlv);
 699
 700         if (priv->scan_channel < priv->scan_req->n_channels) {
 701                 cancel_delayed_work(&priv->scan_work);
 702                 if (!priv->stopping)
 703                         queue_delayed_work(priv->work_thread, &priv->scan_work,
 704                                 msecs_to_jiffies(300));
 705         }
 706
 707         /* This is the final data we are about to send */
 708         scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
 709         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
 710                     sizeof(*scan_cmd));
 711         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
 712                     tlv - scan_cmd->tlvbuffer);
 713
 714         __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
 715                 le16_to_cpu(scan_cmd->hdr.size),
 716                 lbs_ret_scan, 0);
 717
 718         if (priv->scan_channel >= priv->scan_req->n_channels) {
 719                 /* Mark scan done */
 720                 if (priv->internal_scan)
 721                         kfree(priv->scan_req);
 722                 else
 723                         cfg80211_scan_done(priv->scan_req, false);
 724
 725                 priv->scan_req = NULL;
 726                 priv->last_scan = jiffies;
 727         }
 728
 729         /* Restart network */
 730         if (carrier)
 731                 netif_carrier_on(priv->dev);
 732         if (running && !priv->tx_pending_len)
 733                 netif_wake_queue(priv->dev);
 734
 735         kfree(scan_cmd);
 736
 737         /* Wake up anything waiting on scan completion */
 738         if (priv->scan_req == NULL) {
 739                 lbs_deb_scan("scan: waking up waiters\n");
 740                 wake_up_all(&priv->scan_q);
 741         }
 742
 743  out_no_scan_cmd:
 744         lbs_deb_leave(LBS_DEB_SCAN);
 745 }
 746
 747 static void _internal_start_scan(struct lbs_private *priv, bool internal,
 748         struct cfg80211_scan_request *request)
 749 {
 750         lbs_deb_enter(LBS_DEB_CFG80211);
 751
 752         lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
 753                 request->n_ssids, request->n_channels, request->ie_len);
 754
 755         priv->scan_channel = 0;
 756         queue_delayed_work(priv->work_thread, &priv->scan_work,
 757                 msecs_to_jiffies(50));
 758
 759         priv->scan_req = request;
 760         priv->internal_scan = internal;
 761
 762         lbs_deb_leave(LBS_DEB_CFG80211);
 763 }
 764
 765 static int lbs_cfg_scan(struct wiphy *wiphy,
 766         struct net_device *dev,
 767         struct cfg80211_scan_request *request)
 768 {
 769         struct lbs_private *priv = wiphy_priv(wiphy);
 770         int ret = 0;
 771
 772         lbs_deb_enter(LBS_DEB_CFG80211);
 773
 774         if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
 775                 /* old scan request not yet processed */
 776                 ret = -EAGAIN;
 777                 goto out;
 778         }
 779
 780         _internal_start_scan(priv, false, request);
 781
 782         if (priv->surpriseremoved)
 783                 ret = -EIO;
 784
 785  out:
 786         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
 787         return ret;
 788 }
 789
 790
 791
 792
 793 /***************************************************************************
 794  * Events
 795  */
 796
 797 void lbs_send_disconnect_notification(struct lbs_private *priv)
 798 {
 799         lbs_deb_enter(LBS_DEB_CFG80211);
 800
 801         cfg80211_disconnected(priv->dev,
 802                 0,
 803                 NULL, 0,
 804                 GFP_KERNEL);
 805
 806         lbs_deb_leave(LBS_DEB_CFG80211);
 807 }
 808
 809 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
 810 {
 811         lbs_deb_enter(LBS_DEB_CFG80211);
 812
 813         cfg80211_michael_mic_failure(priv->dev,
 814                 priv->assoc_bss,
 815                 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
 816                         NL80211_KEYTYPE_GROUP :
 817                         NL80211_KEYTYPE_PAIRWISE,
 818                 -1,
 819                 NULL,
 820                 GFP_KERNEL);
 821
 822         lbs_deb_leave(LBS_DEB_CFG80211);
 823 }
 824
 825
 826
 827
 828 /***************************************************************************
 829  * Connect/disconnect
 830  */
 831
 832
 833 /*
 834  * This removes all WEP keys
 835  */
 836 static int lbs_remove_wep_keys(struct lbs_private *priv)
 837 {
 838         struct cmd_ds_802_11_set_wep cmd;
 839         int ret;
 840
 841         lbs_deb_enter(LBS_DEB_CFG80211);
 842
 843         memset(&cmd, 0, sizeof(cmd));
 844         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 845         cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
 846         cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
 847
 848         ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
 849
 850         lbs_deb_leave(LBS_DEB_CFG80211);
 851         return ret;
 852 }
 853
 854 /*
 855  * Set WEP keys
 856  */
 857 static int lbs_set_wep_keys(struct lbs_private *priv)
 858 {
 859         struct cmd_ds_802_11_set_wep cmd;
 860         int i;
 861         int ret;
 862
 863         lbs_deb_enter(LBS_DEB_CFG80211);
 864
 865         /*
 866          * command         13 00
 867          * size            50 00
 868          * sequence        xx xx
 869          * result          00 00
 870          * action          02 00     ACT_ADD
 871          * transmit key    00 00
 872          * type for key 1  01        WEP40
 873          * type for key 2  00
 874          * type for key 3  00
 875          * type for key 4  00
 876          * key 1           39 39 39 39 39 00 00 00
 877          *                 00 00 00 00 00 00 00 00
 878          * key 2           00 00 00 00 00 00 00 00
 879          *                 00 00 00 00 00 00 00 00
 880          * key 3           00 00 00 00 00 00 00 00
 881          *                 00 00 00 00 00 00 00 00
 882          * key 4           00 00 00 00 00 00 00 00
 883          */
 884         if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
 885             priv->wep_key_len[2] || priv->wep_key_len[3]) {
 886                 /* Only set wep keys if we have at least one of them */
 887                 memset(&cmd, 0, sizeof(cmd));
 888                 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 889                 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
 890                 cmd.action = cpu_to_le16(CMD_ACT_ADD);
 891
 892                 for (i = 0; i < 4; i++) {
 893                         switch (priv->wep_key_len[i]) {
 894                         case WLAN_KEY_LEN_WEP40:
 895                                 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
 896                                 break;
 897                         case WLAN_KEY_LEN_WEP104:
 898                                 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
 899                                 break;
 900                         default:
 901                                 cmd.keytype[i] = 0;
 902                                 break;
 903                         }
 904                         memcpy(cmd.keymaterial[i], priv->wep_key[i],
 905                                priv->wep_key_len[i]);
 906                 }
 907
 908                 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
 909         } else {
 910                 /* Otherwise remove all wep keys */
 911                 ret = lbs_remove_wep_keys(priv);
 912         }
 913
 914         lbs_deb_leave(LBS_DEB_CFG80211);
 915         return ret;
 916 }
 917
 918
 919 /*
 920  * Enable/Disable RSN status
 921  */
 922 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
 923 {
 924         struct cmd_ds_802_11_enable_rsn cmd;
 925         int ret;
 926
 927         lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
 928
 929         /*
 930          * cmd       2f 00
 931          * size      0c 00
 932          * sequence  xx xx
 933          * result    00 00
 934          * action    01 00    ACT_SET
 935          * enable    01 00
 936          */
 937         memset(&cmd, 0, sizeof(cmd));
 938         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 939         cmd.action = cpu_to_le16(CMD_ACT_SET);
 940         cmd.enable = cpu_to_le16(enable);
 941
 942         ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
 943
 944         lbs_deb_leave(LBS_DEB_CFG80211);
 945         return ret;
 946 }
 947
 948
 949 /*
 950  * Set WPA/WPA key material
 951  */
 952
 953 /* like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
 954  * get rid of WEXT, this should go into host.h */
 955
 956 struct cmd_key_material {
 957         struct cmd_header hdr;
 958
 959         __le16 action;
 960         struct MrvlIEtype_keyParamSet param;
 961 } __packed;
 962
 963 static int lbs_set_key_material(struct lbs_private *priv,
 964                                 int key_type,
 965                                 int key_info,
 966                                 u8 *key, u16 key_len)
 967 {
 968         struct cmd_key_material cmd;
 969         int ret;
 970
 971         lbs_deb_enter(LBS_DEB_CFG80211);
 972
 973         /*
 974          * Example for WPA (TKIP):
 975          *
 976          * cmd       5e 00
 977          * size      34 00
 978          * sequence  xx xx
 979          * result    00 00
 980          * action    01 00
 981          * TLV type  00 01    key param
 982          * length    00 26
 983          * key type  01 00    TKIP
 984          * key info  06 00    UNICAST | ENABLED
 985          * key len   20 00
 986          * key       32 bytes
 987          */
 988         memset(&cmd, 0, sizeof(cmd));
 989         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 990         cmd.action = cpu_to_le16(CMD_ACT_SET);
 991         cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
 992         cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
 993         cmd.param.keytypeid = cpu_to_le16(key_type);
 994         cmd.param.keyinfo = cpu_to_le16(key_info);
 995         cmd.param.keylen = cpu_to_le16(key_len);
 996         if (key && key_len)
 997                 memcpy(cmd.param.key, key, key_len);
 998
 999         ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1000
1001         lbs_deb_leave(LBS_DEB_CFG80211);
1002         return ret;
1003 }
1004
1005
1006 /*
1007  * Sets the auth type (open, shared, etc) in the firmware. That
1008  * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1009  * command doesn't send an authentication frame at all, it just
1010  * stores the auth_type.
1011  */
1012 static int lbs_set_authtype(struct lbs_private *priv,
1013                             struct cfg80211_connect_params *sme)
1014 {
1015         struct cmd_ds_802_11_authenticate cmd;
1016         int ret;
1017
1018         lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type);
1019
1020         /*
1021          * cmd        11 00
1022          * size       19 00
1023          * sequence   xx xx
1024          * result     00 00
1025          * BSS id     00 13 19 80 da 30
1026          * auth type  00
1027          * reserved   00 00 00 00 00 00 00 00 00 00
1028          */
1029         memset(&cmd, 0, sizeof(cmd));
1030         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1031         if (sme->bssid)
1032                 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1033         /* convert auth_type */
1034         ret = lbs_auth_to_authtype(sme->auth_type);
1035         if (ret < 0)
1036                 goto done;
1037
1038         cmd.authtype = ret;
1039         ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1040
1041  done:
1042         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1043         return ret;
1044 }
1045
1046
1047 /*
1048  * Create association request
1049  */
1050 #define LBS_ASSOC_MAX_CMD_SIZE                     \
1051         (sizeof(struct cmd_ds_802_11_associate)    \
1052          - 512 /* cmd_ds_802_11_associate.iebuf */ \
1053          + LBS_MAX_SSID_TLV_SIZE                   \
1054          + LBS_MAX_CHANNEL_TLV_SIZE                \
1055          + LBS_MAX_CF_PARAM_TLV_SIZE               \
1056          + LBS_MAX_AUTH_TYPE_TLV_SIZE              \
1057          + LBS_MAX_WPA_TLV_SIZE)
1058
1059 static int lbs_associate(struct lbs_private *priv,
1060                 struct cfg80211_bss *bss,
1061                 struct cfg80211_connect_params *sme)
1062 {
1063         struct cmd_ds_802_11_associate_response *resp;
1064         struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1065                                                       GFP_KERNEL);
1066         const u8 *ssid_eid;
1067         size_t len, resp_ie_len;
1068         int status;
1069         int ret;
1070         u8 *pos = &(cmd->iebuf[0]);
1071         u8 *tmp;
1072
1073         lbs_deb_enter(LBS_DEB_CFG80211);
1074
1075         if (!cmd) {
1076                 ret = -ENOMEM;
1077                 goto done;
1078         }
1079
1080         /*
1081          * cmd              50 00
1082          * length           34 00
1083          * sequence         xx xx
1084          * result           00 00
1085          * BSS id           00 13 19 80 da 30
1086          * capabilities     11 00
1087          * listen interval  0a 00
1088          * beacon interval  00 00
1089          * DTIM period      00
1090          * TLVs             xx   (up to 512 bytes)
1091          */
1092         cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1093
1094         /* Fill in static fields */
1095         memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1096         cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1097         cmd->capability = cpu_to_le16(bss->capability);
1098
1099         /* add SSID TLV */
1100         ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1101         if (ssid_eid)
1102                 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1103         else
1104                 lbs_deb_assoc("no SSID\n");
1105
1106         /* add DS param TLV */
1107         if (bss->channel)
1108                 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1109         else
1110                 lbs_deb_assoc("no channel\n");
1111
1112         /* add (empty) CF param TLV */
1113         pos += lbs_add_cf_param_tlv(pos);
1114
1115         /* add rates TLV */
1116         tmp = pos + 4; /* skip Marvell IE header */
1117         pos += lbs_add_common_rates_tlv(pos, bss);
1118         lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1119
1120         /* add auth type TLV */
1121         if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1122                 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1123
1124         /* add WPA/WPA2 TLV */
1125         if (sme->ie && sme->ie_len)
1126                 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1127
1128         len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1129                 (u16)(pos - (u8 *) &cmd->iebuf);
1130         cmd->hdr.size = cpu_to_le16(len);
1131
1132         lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1133                         le16_to_cpu(cmd->hdr.size));
1134
1135         /* store for later use */
1136         memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1137
1138         ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1139         if (ret)
1140                 goto done;
1141
1142         /* generate connect message to cfg80211 */
1143
1144         resp = (void *) cmd; /* recast for easier field access */
1145         status = le16_to_cpu(resp->statuscode);
1146
1147         /* Older FW versions map the IEEE 802.11 Status Code in the association
1148          * response to the following values returned in resp->statuscode:
1149          *
1150          *    IEEE Status Code                Marvell Status Code
1151          *    0                       ->      0x0000 ASSOC_RESULT_SUCCESS
1152          *    13                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1153          *    14                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1154          *    15                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1155          *    16                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1156          *    others                  ->      0x0003 ASSOC_RESULT_REFUSED
1157          *
1158          * Other response codes:
1159          *    0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1160          *    0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1161          *                                    association response from the AP)
1162          */
1163         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1164                 switch (status) {
1165                 case 0:
1166                         break;
1167                 case 1:
1168                         lbs_deb_assoc("invalid association parameters\n");
1169                         status = WLAN_STATUS_CAPS_UNSUPPORTED;
1170                         break;
1171                 case 2:
1172                         lbs_deb_assoc("timer expired while waiting for AP\n");
1173                         status = WLAN_STATUS_AUTH_TIMEOUT;
1174                         break;
1175                 case 3:
1176                         lbs_deb_assoc("association refused by AP\n");
1177                         status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1178                         break;
1179                 case 4:
1180                         lbs_deb_assoc("authentication refused by AP\n");
1181                         status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1182                         break;
1183                 default:
1184                         lbs_deb_assoc("association failure %d\n", status);
1185                         /* v5 OLPC firmware does return the AP status code if
1186                          * it's not one of the values above.  Let that through.
1187                          */
1188                         break;
1189                 }
1190         }
1191
1192         lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1193                       "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1194                       le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1195
1196         resp_ie_len = le16_to_cpu(resp->hdr.size)
1197                 - sizeof(resp->hdr)
1198                 - 6;
1199         cfg80211_connect_result(priv->dev,
1200                                 priv->assoc_bss,
1201                                 sme->ie, sme->ie_len,
1202                                 resp->iebuf, resp_ie_len,
1203                                 status,
1204                                 GFP_KERNEL);
1205
1206         if (status == 0) {
1207                 /* TODO: get rid of priv->connect_status */
1208                 priv->connect_status = LBS_CONNECTED;
1209                 netif_carrier_on(priv->dev);
1210                 if (!priv->tx_pending_len)
1211                         netif_tx_wake_all_queues(priv->dev);
1212         }
1213
1214 done:
1215         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1216         return ret;
1217 }
1218
1219 static struct cfg80211_scan_request *
1220 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1221 {
1222         struct cfg80211_scan_request *creq = NULL;
1223         int i, n_channels = 0;
1224         enum ieee80211_band band;
1225
1226         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1227                 if (wiphy->bands[band])
1228                         n_channels += wiphy->bands[band]->n_channels;
1229         }
1230
1231         creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1232                        n_channels * sizeof(void *),
1233                        GFP_ATOMIC);
1234         if (!creq)
1235                 return NULL;
1236
1237         /* SSIDs come after channels */
1238         creq->ssids = (void *)&creq->channels[n_channels];
1239         creq->n_channels = n_channels;
1240         creq->n_ssids = 1;
1241
1242         /* Scan all available channels */
1243         i = 0;
1244         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1245                 int j;
1246
1247                 if (!wiphy->bands[band])
1248                         continue;
1249
1250                 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1251                         /* ignore disabled channels */
1252                         if (wiphy->bands[band]->channels[j].flags &
1253                                                 IEEE80211_CHAN_DISABLED)
1254                                 continue;
1255
1256                         creq->channels[i] = &wiphy->bands[band]->channels[j];
1257                         i++;
1258                 }
1259         }
1260         if (i) {
1261                 /* Set real number of channels specified in creq->channels[] */
1262                 creq->n_channels = i;
1263
1264                 /* Scan for the SSID we're going to connect to */
1265                 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1266                 creq->ssids[0].ssid_len = sme->ssid_len;
1267         } else {
1268                 /* No channels found... */
1269                 kfree(creq);
1270                 creq = NULL;
1271         }
1272
1273         return creq;
1274 }
1275
1276 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1277                            struct cfg80211_connect_params *sme)
1278 {
1279         struct lbs_private *priv = wiphy_priv(wiphy);
1280         struct cfg80211_bss *bss = NULL;
1281         int ret = 0;
1282         u8 preamble = RADIO_PREAMBLE_SHORT;
1283
1284         lbs_deb_enter(LBS_DEB_CFG80211);
1285
1286         if (!sme->bssid) {
1287                 /* Run a scan if one isn't in-progress already and if the last
1288                  * scan was done more than 2 seconds ago.
1289                  */
1290                 if (priv->scan_req == NULL &&
1291                     time_after(jiffies, priv->last_scan + (2 * HZ))) {
1292                         struct cfg80211_scan_request *creq;
1293
1294                         creq = _new_connect_scan_req(wiphy, sme);
1295                         if (!creq) {
1296                                 ret = -EINVAL;
1297                                 goto done;
1298                         }
1299
1300                         lbs_deb_assoc("assoc: scanning for compatible AP\n");
1301                         _internal_start_scan(priv, true, creq);
1302                 }
1303
1304                 /* Wait for any in-progress scan to complete */
1305                 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1306                 wait_event_interruptible_timeout(priv->scan_q,
1307                                                  (priv->scan_req == NULL),
1308                                                  (15 * HZ));
1309                 lbs_deb_assoc("assoc: scanning competed\n");
1310         }
1311
1312         /* Find the BSS we want using available scan results */
1313         bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1314                 sme->ssid, sme->ssid_len,
1315                 WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
1316         if (!bss) {
1317                 lbs_pr_err("assoc: bss %pM not in scan results\n",
1318                            sme->bssid);
1319                 ret = -ENOENT;
1320                 goto done;
1321         }
1322         lbs_deb_assoc("trying %pM\n", bss->bssid);
1323         lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1324                       sme->crypto.cipher_group,
1325                       sme->key_idx, sme->key_len);
1326
1327         /* As this is a new connection, clear locally stored WEP keys */
1328         priv->wep_tx_key = 0;
1329         memset(priv->wep_key, 0, sizeof(priv->wep_key));
1330         memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1331
1332         /* set/remove WEP keys */
1333         switch (sme->crypto.cipher_group) {
1334         case WLAN_CIPHER_SUITE_WEP40:
1335         case WLAN_CIPHER_SUITE_WEP104:
1336                 /* Store provided WEP keys in priv-> */
1337                 priv->wep_tx_key = sme->key_idx;
1338                 priv->wep_key_len[sme->key_idx] = sme->key_len;
1339                 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1340                 /* Set WEP keys and WEP mode */
1341                 lbs_set_wep_keys(priv);
1342                 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1343                 lbs_set_mac_control(priv);
1344                 /* No RSN mode for WEP */
1345                 lbs_enable_rsn(priv, 0);
1346                 break;
1347         case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1348                 /*
1349                  * If we don't have no WEP, no WPA and no WPA2,
1350                  * we remove all keys like in the WPA/WPA2 setup,
1351                  * we just don't set RSN.
1352                  *
1353                  * Therefore: fall-through
1354                  */
1355         case WLAN_CIPHER_SUITE_TKIP:
1356         case WLAN_CIPHER_SUITE_CCMP:
1357                 /* Remove WEP keys and WEP mode */
1358                 lbs_remove_wep_keys(priv);
1359                 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1360                 lbs_set_mac_control(priv);
1361
1362                 /* clear the WPA/WPA2 keys */
1363                 lbs_set_key_material(priv,
1364                         KEY_TYPE_ID_WEP, /* doesn't matter */
1365                         KEY_INFO_WPA_UNICAST,
1366                         NULL, 0);
1367                 lbs_set_key_material(priv,
1368                         KEY_TYPE_ID_WEP, /* doesn't matter */
1369                         KEY_INFO_WPA_MCAST,
1370                         NULL, 0);
1371                 /* RSN mode for WPA/WPA2 */
1372                 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1373                 break;
1374         default:
1375                 lbs_pr_err("unsupported cipher group 0x%x\n",
1376                            sme->crypto.cipher_group);
1377                 ret = -ENOTSUPP;
1378                 goto done;
1379         }
1380
1381         lbs_set_authtype(priv, sme);
1382         lbs_set_radio(priv, preamble, 1);
1383
1384         /* Do the actual association */
1385         ret = lbs_associate(priv, bss, sme);
1386
1387  done:
1388         if (bss)
1389                 cfg80211_put_bss(bss);
1390         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1391         return ret;
1392 }
1393
1394 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1395         u16 reason_code)
1396 {
1397         struct lbs_private *priv = wiphy_priv(wiphy);
1398         struct cmd_ds_802_11_deauthenticate cmd;
1399
1400         lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code);
1401
1402         /* store for lbs_cfg_ret_disconnect() */
1403         priv->disassoc_reason = reason_code;
1404
1405         memset(&cmd, 0, sizeof(cmd));
1406         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1407         /* Mildly ugly to use a locally store my own BSSID ... */
1408         memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1409         cmd.reasoncode = cpu_to_le16(reason_code);
1410
1411         if (lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd))
1412                 return -EFAULT;
1413
1414         cfg80211_disconnected(priv->dev,
1415                         priv->disassoc_reason,
1416                         NULL, 0,
1417                         GFP_KERNEL);
1418         priv->connect_status = LBS_DISCONNECTED;
1419
1420         return 0;
1421 }
1422
1423
1424 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1425                                    struct net_device *netdev,
1426                                    u8 key_index, bool unicast,
1427                                    bool multicast)
1428 {
1429         struct lbs_private *priv = wiphy_priv(wiphy);
1430
1431         lbs_deb_enter(LBS_DEB_CFG80211);
1432
1433         if (key_index != priv->wep_tx_key) {
1434                 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1435                 priv->wep_tx_key = key_index;
1436                 lbs_set_wep_keys(priv);
1437         }
1438
1439         return 0;
1440 }
1441
1442
1443 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1444                            u8 idx, bool pairwise, const u8 *mac_addr,
1445                            struct key_params *params)
1446 {
1447         struct lbs_private *priv = wiphy_priv(wiphy);
1448         u16 key_info;
1449         u16 key_type;
1450         int ret = 0;
1451
1452         lbs_deb_enter(LBS_DEB_CFG80211);
1453
1454         lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1455                       params->cipher, mac_addr);
1456         lbs_deb_assoc("add_key: key index %d, key len %d\n",
1457                       idx, params->key_len);
1458         if (params->key_len)
1459                 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1460                             params->key, params->key_len);
1461
1462         lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1463         if (params->seq_len)
1464                 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1465                             params->seq, params->seq_len);
1466
1467         switch (params->cipher) {
1468         case WLAN_CIPHER_SUITE_WEP40:
1469         case WLAN_CIPHER_SUITE_WEP104:
1470                 /* actually compare if something has changed ... */
1471                 if ((priv->wep_key_len[idx] != params->key_len) ||
1472                         memcmp(priv->wep_key[idx],
1473                                params->key, params->key_len) != 0) {
1474                         priv->wep_key_len[idx] = params->key_len;
1475                         memcpy(priv->wep_key[idx],
1476                                params->key, params->key_len);
1477                         lbs_set_wep_keys(priv);
1478                 }
1479                 break;
1480         case WLAN_CIPHER_SUITE_TKIP:
1481         case WLAN_CIPHER_SUITE_CCMP:
1482                 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1483                                                    ? KEY_INFO_WPA_UNICAST
1484                                                    : KEY_INFO_WPA_MCAST);
1485                 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1486                         ? KEY_TYPE_ID_TKIP
1487                         : KEY_TYPE_ID_AES;
1488                 lbs_set_key_material(priv,
1489                                      key_type,
1490                                      key_info,
1491                                      params->key, params->key_len);
1492                 break;
1493         default:
1494                 lbs_pr_err("unhandled cipher 0x%x\n", params->cipher);
1495                 ret = -ENOTSUPP;
1496                 break;
1497         }
1498
1499         return ret;
1500 }
1501
1502
1503 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1504                            u8 key_index, bool pairwise, const u8 *mac_addr)
1505 {
1506
1507         lbs_deb_enter(LBS_DEB_CFG80211);
1508
1509         lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1510                       key_index, mac_addr);
1511
1512 #ifdef TODO
1513         struct lbs_private *priv = wiphy_priv(wiphy);
1514         /*
1515          * I think can keep this a NO-OP, because:
1516
1517          * - we clear all keys whenever we do lbs_cfg_connect() anyway
1518          * - neither "iw" nor "wpa_supplicant" won't call this during
1519          *   an ongoing connection
1520          * - TODO: but I have to check if this is still true when
1521          *   I set the AP to periodic re-keying
1522          * - we've not kzallec() something when we've added a key at
1523          *   lbs_cfg_connect() or lbs_cfg_add_key().
1524          *
1525          * This causes lbs_cfg_del_key() only called at disconnect time,
1526          * where we'd just waste time deleting a key that is not going
1527          * to be used anyway.
1528          */
1529         if (key_index < 3 && priv->wep_key_len[key_index]) {
1530                 priv->wep_key_len[key_index] = 0;
1531                 lbs_set_wep_keys(priv);
1532         }
1533 #endif
1534
1535         return 0;
1536 }
1537
1538
1539 /***************************************************************************
1540  * Get station
1541  */
1542
1543 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1544                               u8 *mac, struct station_info *sinfo)
1545 {
1546         struct lbs_private *priv = wiphy_priv(wiphy);
1547         s8 signal, noise;
1548         int ret;
1549         size_t i;
1550
1551         lbs_deb_enter(LBS_DEB_CFG80211);
1552
1553         sinfo->filled |= STATION_INFO_TX_BYTES |
1554                          STATION_INFO_TX_PACKETS |
1555                          STATION_INFO_RX_BYTES |
1556                          STATION_INFO_RX_PACKETS;
1557         sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1558         sinfo->tx_packets = priv->dev->stats.tx_packets;
1559         sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1560         sinfo->rx_packets = priv->dev->stats.rx_packets;
1561
1562         /* Get current RSSI */
1563         ret = lbs_get_rssi(priv, &signal, &noise);
1564         if (ret == 0) {
1565                 sinfo->signal = signal;
1566                 sinfo->filled |= STATION_INFO_SIGNAL;
1567         }
1568
1569         /* Convert priv->cur_rate from hw_value to NL80211 value */
1570         for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1571                 if (priv->cur_rate == lbs_rates[i].hw_value) {
1572                         sinfo->txrate.legacy = lbs_rates[i].bitrate;
1573                         sinfo->filled |= STATION_INFO_TX_BITRATE;
1574                         break;
1575                 }
1576         }
1577
1578         return 0;
1579 }
1580
1581
1582
1583
1584 /***************************************************************************
1585  * "Site survey", here just current channel and noise level
1586  */
1587
1588 static int lbs_get_survey(struct wiphy *wiphy, struct net_device *dev,
1589         int idx, struct survey_info *survey)
1590 {
1591         struct lbs_private *priv = wiphy_priv(wiphy);
1592         s8 signal, noise;
1593         int ret;
1594
1595         if (idx != 0)
1596                 ret = -ENOENT;
1597
1598         lbs_deb_enter(LBS_DEB_CFG80211);
1599
1600         survey->channel = ieee80211_get_channel(wiphy,
1601                 ieee80211_channel_to_frequency(priv->channel,
1602                                                IEEE80211_BAND_2GHZ));
1603
1604         ret = lbs_get_rssi(priv, &signal, &noise);
1605         if (ret == 0) {
1606                 survey->filled = SURVEY_INFO_NOISE_DBM;
1607                 survey->noise = noise;
1608         }
1609
1610         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1611         return ret;
1612 }
1613
1614
1615
1616
1617 /***************************************************************************
1618  * Change interface
1619  */
1620
1621 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1622         enum nl80211_iftype type, u32 *flags,
1623                struct vif_params *params)
1624 {
1625         struct lbs_private *priv = wiphy_priv(wiphy);
1626         int ret = 0;
1627
1628         lbs_deb_enter(LBS_DEB_CFG80211);
1629
1630         switch (type) {
1631         case NL80211_IFTYPE_MONITOR:
1632                 ret = lbs_set_monitor_mode(priv, 1);
1633                 break;
1634         case NL80211_IFTYPE_STATION:
1635                 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
1636                         ret = lbs_set_monitor_mode(priv, 0);
1637                 if (!ret)
1638                         ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 1);
1639                 break;
1640         case NL80211_IFTYPE_ADHOC:
1641                 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
1642                         ret = lbs_set_monitor_mode(priv, 0);
1643                 if (!ret)
1644                         ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 2);
1645                 break;
1646         default:
1647                 ret = -ENOTSUPP;
1648         }
1649
1650         if (!ret)
1651                 priv->wdev->iftype = type;
1652
1653         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1654         return ret;
1655 }
1656
1657
1658
1659 /***************************************************************************
1660  * IBSS (Ad-Hoc)
1661  */
1662
1663 /* The firmware needs the following bits masked out of the beacon-derived
1664  * capability field when associating/joining to a BSS:
1665  *  9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1666  */
1667 #define CAPINFO_MASK (~(0xda00))
1668
1669
1670 static void lbs_join_post(struct lbs_private *priv,
1671                           struct cfg80211_ibss_params *params,
1672                           u8 *bssid, u16 capability)
1673 {
1674         u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1675                    2 + 4 +                      /* basic rates */
1676                    2 + 1 +                      /* DS parameter */
1677                    2 + 2 +                      /* atim */
1678                    2 + 8];                      /* extended rates */
1679         u8 *fake = fake_ie;
1680
1681         lbs_deb_enter(LBS_DEB_CFG80211);
1682
1683         /*
1684          * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1685          * the real IE from the firmware. So we fabricate a fake IE based on
1686          * what the firmware actually sends (sniffed with wireshark).
1687          */
1688         /* Fake SSID IE */
1689         *fake++ = WLAN_EID_SSID;
1690         *fake++ = params->ssid_len;
1691         memcpy(fake, params->ssid, params->ssid_len);
1692         fake += params->ssid_len;
1693         /* Fake supported basic rates IE */
1694         *fake++ = WLAN_EID_SUPP_RATES;
1695         *fake++ = 4;
1696         *fake++ = 0x82;
1697         *fake++ = 0x84;
1698         *fake++ = 0x8b;
1699         *fake++ = 0x96;
1700         /* Fake DS channel IE */
1701         *fake++ = WLAN_EID_DS_PARAMS;
1702         *fake++ = 1;
1703         *fake++ = params->channel->hw_value;
1704         /* Fake IBSS params IE */
1705         *fake++ = WLAN_EID_IBSS_PARAMS;
1706         *fake++ = 2;
1707         *fake++ = 0; /* ATIM=0 */
1708         *fake++ = 0;
1709         /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1710          * but I don't know how this could be checked */
1711         *fake++ = WLAN_EID_EXT_SUPP_RATES;
1712         *fake++ = 8;
1713         *fake++ = 0x0c;
1714         *fake++ = 0x12;
1715         *fake++ = 0x18;
1716         *fake++ = 0x24;
1717         *fake++ = 0x30;
1718         *fake++ = 0x48;
1719         *fake++ = 0x60;
1720         *fake++ = 0x6c;
1721         lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1722
1723         cfg80211_inform_bss(priv->wdev->wiphy,
1724                             params->channel,
1725                             bssid,
1726                             0,
1727                             capability,
1728                             params->beacon_interval,
1729                             fake_ie, fake - fake_ie,
1730                             0, GFP_KERNEL);
1731
1732         memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1733         priv->wdev->ssid_len = params->ssid_len;
1734
1735         cfg80211_ibss_joined(priv->dev, bssid, GFP_KERNEL);
1736
1737         /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1738         priv->connect_status = LBS_CONNECTED;
1739         netif_carrier_on(priv->dev);
1740         if (!priv->tx_pending_len)
1741                 netif_wake_queue(priv->dev);
1742
1743         lbs_deb_leave(LBS_DEB_CFG80211);
1744 }
1745
1746 static int lbs_ibss_join_existing(struct lbs_private *priv,
1747         struct cfg80211_ibss_params *params,
1748         struct cfg80211_bss *bss)
1749 {
1750         const u8 *rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1751         struct cmd_ds_802_11_ad_hoc_join cmd;
1752         u8 preamble = RADIO_PREAMBLE_SHORT;
1753         int ret = 0;
1754
1755         lbs_deb_enter(LBS_DEB_CFG80211);
1756
1757         /* TODO: set preamble based on scan result */
1758         ret = lbs_set_radio(priv, preamble, 1);
1759         if (ret)
1760                 goto out;
1761
1762         /*
1763          * Example CMD_802_11_AD_HOC_JOIN command:
1764          *
1765          * command         2c 00         CMD_802_11_AD_HOC_JOIN
1766          * size            65 00
1767          * sequence        xx xx
1768          * result          00 00
1769          * bssid           02 27 27 97 2f 96
1770          * ssid            49 42 53 53 00 00 00 00
1771          *                 00 00 00 00 00 00 00 00
1772          *                 00 00 00 00 00 00 00 00
1773          *                 00 00 00 00 00 00 00 00
1774          * type            02            CMD_BSS_TYPE_IBSS
1775          * beacon period   64 00
1776          * dtim period     00
1777          * timestamp       00 00 00 00 00 00 00 00
1778          * localtime       00 00 00 00 00 00 00 00
1779          * IE DS           03
1780          * IE DS len       01
1781          * IE DS channel   01
1782          * reserveed       00 00 00 00
1783          * IE IBSS         06
1784          * IE IBSS len     02
1785          * IE IBSS atim    00 00
1786          * reserved        00 00 00 00
1787          * capability      02 00
1788          * rates           82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1789          * fail timeout    ff 00
1790          * probe delay     00 00
1791          */
1792         memset(&cmd, 0, sizeof(cmd));
1793         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1794
1795         memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1796         memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1797         cmd.bss.type = CMD_BSS_TYPE_IBSS;
1798         cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1799         cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1800         cmd.bss.ds.header.len = 1;
1801         cmd.bss.ds.channel = params->channel->hw_value;
1802         cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1803         cmd.bss.ibss.header.len = 2;
1804         cmd.bss.ibss.atimwindow = 0;
1805         cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1806
1807         /* set rates to the intersection of our rates and the rates in the
1808            bss */
1809         if (!rates_eid) {
1810                 lbs_add_rates(cmd.bss.rates);
1811         } else {
1812                 int hw, i;
1813                 u8 rates_max = rates_eid[1];
1814                 u8 *rates = cmd.bss.rates;
1815                 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1816                         u8 hw_rate = lbs_rates[hw].bitrate / 5;
1817                         for (i = 0; i < rates_max; i++) {
1818                                 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1819                                         u8 rate = rates_eid[i+2];
1820                                         if (rate == 0x02 || rate == 0x04 ||
1821                                             rate == 0x0b || rate == 0x16)
1822                                                 rate |= 0x80;
1823                                         *rates++ = rate;
1824                                 }
1825                         }
1826                 }
1827         }
1828
1829         /* Only v8 and below support setting this */
1830         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1831                 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1832                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1833         }
1834         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1835         if (ret)
1836                 goto out;
1837
1838         /*
1839          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1840          *
1841          * response        2c 80
1842          * size            09 00
1843          * sequence        xx xx
1844          * result          00 00
1845          * reserved        00
1846          */
1847         lbs_join_post(priv, params, bss->bssid, bss->capability);
1848
1849  out:
1850         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1851         return ret;
1852 }
1853
1854
1855
1856 static int lbs_ibss_start_new(struct lbs_private *priv,
1857         struct cfg80211_ibss_params *params)
1858 {
1859         struct cmd_ds_802_11_ad_hoc_start cmd;
1860         struct cmd_ds_802_11_ad_hoc_result *resp =
1861                 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1862         u8 preamble = RADIO_PREAMBLE_SHORT;
1863         int ret = 0;
1864         u16 capability;
1865
1866         lbs_deb_enter(LBS_DEB_CFG80211);
1867
1868         ret = lbs_set_radio(priv, preamble, 1);
1869         if (ret)
1870                 goto out;
1871
1872         /*
1873          * Example CMD_802_11_AD_HOC_START command:
1874          *
1875          * command         2b 00         CMD_802_11_AD_HOC_START
1876          * size            b1 00
1877          * sequence        xx xx
1878          * result          00 00
1879          * ssid            54 45 53 54 00 00 00 00
1880          *                 00 00 00 00 00 00 00 00
1881          *                 00 00 00 00 00 00 00 00
1882          *                 00 00 00 00 00 00 00 00
1883          * bss type        02
1884          * beacon period   64 00
1885          * dtim period     00
1886          * IE IBSS         06
1887          * IE IBSS len     02
1888          * IE IBSS atim    00 00
1889          * reserved        00 00 00 00
1890          * IE DS           03
1891          * IE DS len       01
1892          * IE DS channel   01
1893          * reserved        00 00 00 00
1894          * probe delay     00 00
1895          * capability      02 00
1896          * rates           82 84 8b 96   (basic rates with have bit 7 set)
1897          *                 0c 12 18 24 30 48 60 6c
1898          * padding         100 bytes
1899          */
1900         memset(&cmd, 0, sizeof(cmd));
1901         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1902         memcpy(cmd.ssid, params->ssid, params->ssid_len);
1903         cmd.bsstype = CMD_BSS_TYPE_IBSS;
1904         cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1905         cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1906         cmd.ibss.header.len = 2;
1907         cmd.ibss.atimwindow = 0;
1908         cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1909         cmd.ds.header.len = 1;
1910         cmd.ds.channel = params->channel->hw_value;
1911         /* Only v8 and below support setting probe delay */
1912         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1913                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1914         /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1915         capability = WLAN_CAPABILITY_IBSS;
1916         cmd.capability = cpu_to_le16(capability);
1917         lbs_add_rates(cmd.rates);
1918
1919
1920         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1921         if (ret)
1922                 goto out;
1923
1924         /*
1925          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1926          *
1927          * response        2b 80
1928          * size            14 00
1929          * sequence        xx xx
1930          * result          00 00
1931          * reserved        00
1932          * bssid           02 2b 7b 0f 86 0e
1933          */
1934         lbs_join_post(priv, params, resp->bssid, capability);
1935
1936  out:
1937         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1938         return ret;
1939 }
1940
1941
1942 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1943                 struct cfg80211_ibss_params *params)
1944 {
1945         struct lbs_private *priv = wiphy_priv(wiphy);
1946         int ret = 0;
1947         struct cfg80211_bss *bss;
1948         DECLARE_SSID_BUF(ssid_buf);
1949
1950         lbs_deb_enter(LBS_DEB_CFG80211);
1951
1952         if (!params->channel) {
1953                 ret = -ENOTSUPP;
1954                 goto out;
1955         }
1956
1957         ret = lbs_set_channel(priv, params->channel->hw_value);
1958         if (ret)
1959                 goto out;
1960
1961         /* Search if someone is beaconing. This assumes that the
1962          * bss list is populated already */
1963         bss = cfg80211_get_bss(wiphy, params->channel, params->bssid,
1964                 params->ssid, params->ssid_len,
1965                 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
1966
1967         if (bss) {
1968                 ret = lbs_ibss_join_existing(priv, params, bss);
1969                 cfg80211_put_bss(bss);
1970         } else
1971                 ret = lbs_ibss_start_new(priv, params);
1972
1973
1974  out:
1975         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1976         return ret;
1977 }
1978
1979
1980 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1981 {
1982         struct lbs_private *priv = wiphy_priv(wiphy);
1983         struct cmd_ds_802_11_ad_hoc_stop cmd;
1984         int ret = 0;
1985
1986         lbs_deb_enter(LBS_DEB_CFG80211);
1987
1988         memset(&cmd, 0, sizeof(cmd));
1989         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1990         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
1991
1992         /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
1993         lbs_mac_event_disconnected(priv);
1994
1995         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1996         return ret;
1997 }
1998
1999
2000
2001
2002 /***************************************************************************
2003  * Initialization
2004  */
2005
2006 static struct cfg80211_ops lbs_cfg80211_ops = {
2007         .set_channel = lbs_cfg_set_channel,
2008         .scan = lbs_cfg_scan,
2009         .connect = lbs_cfg_connect,
2010         .disconnect = lbs_cfg_disconnect,
2011         .add_key = lbs_cfg_add_key,
2012         .del_key = lbs_cfg_del_key,
2013         .set_default_key = lbs_cfg_set_default_key,
2014         .get_station = lbs_cfg_get_station,
2015         .dump_survey = lbs_get_survey,
2016         .change_virtual_intf = lbs_change_intf,
2017         .join_ibss = lbs_join_ibss,
2018         .leave_ibss = lbs_leave_ibss,
2019 };
2020
2021
2022 /*
2023  * At this time lbs_private *priv doesn't even exist, so we just allocate
2024  * memory and don't initialize the wiphy further. This is postponed until we
2025  * can talk to the firmware and happens at registration time in
2026  * lbs_cfg_wiphy_register().
2027  */
2028 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2029 {
2030         int ret = 0;
2031         struct wireless_dev *wdev;
2032
2033         lbs_deb_enter(LBS_DEB_CFG80211);
2034
2035         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2036         if (!wdev) {
2037                 dev_err(dev, "cannot allocate wireless device\n");
2038                 return ERR_PTR(-ENOMEM);
2039         }
2040
2041         wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2042         if (!wdev->wiphy) {
2043                 dev_err(dev, "cannot allocate wiphy\n");
2044                 ret = -ENOMEM;
2045                 goto err_wiphy_new;
2046         }
2047
2048         lbs_deb_leave(LBS_DEB_CFG80211);
2049         return wdev;
2050
2051  err_wiphy_new:
2052         kfree(wdev);
2053         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2054         return ERR_PTR(ret);
2055 }
2056
2057
2058 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2059 {
2060         struct region_code_mapping {
2061                 const char *cn;
2062                 int code;
2063         };
2064
2065         /* Section 5.17.2 */
2066         static const struct region_code_mapping regmap[] = {
2067                 {"US ", 0x10}, /* US FCC */
2068                 {"CA ", 0x20}, /* Canada */
2069                 {"EU ", 0x30}, /* ETSI   */
2070                 {"ES ", 0x31}, /* Spain  */
2071                 {"FR ", 0x32}, /* France */
2072                 {"JP ", 0x40}, /* Japan  */
2073         };
2074         size_t i;
2075
2076         lbs_deb_enter(LBS_DEB_CFG80211);
2077
2078         for (i = 0; i < ARRAY_SIZE(regmap); i++)
2079                 if (regmap[i].code == priv->regioncode) {
2080                         regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2081                         break;
2082                 }
2083
2084         lbs_deb_leave(LBS_DEB_CFG80211);
2085 }
2086
2087
2088 /*
2089  * This function get's called after lbs_setup_firmware() determined the
2090  * firmware capabities. So we can setup the wiphy according to our
2091  * hardware/firmware.
2092  */
2093 int lbs_cfg_register(struct lbs_private *priv)
2094 {
2095         struct wireless_dev *wdev = priv->wdev;
2096         int ret;
2097
2098         lbs_deb_enter(LBS_DEB_CFG80211);
2099
2100         wdev->wiphy->max_scan_ssids = 1;
2101         wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2102
2103         wdev->wiphy->interface_modes =
2104                         BIT(NL80211_IFTYPE_STATION) |
2105                         BIT(NL80211_IFTYPE_ADHOC);
2106         if (lbs_rtap_supported(priv))
2107                 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2108
2109         wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz;
2110
2111         /*
2112          * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2113          * never seen a firmware without WPA
2114          */
2115         wdev->wiphy->cipher_suites = cipher_suites;
2116         wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2117         wdev->wiphy->reg_notifier = lbs_reg_notifier;
2118
2119         ret = wiphy_register(wdev->wiphy);
2120         if (ret < 0)
2121                 lbs_pr_err("cannot register wiphy device\n");
2122
2123         priv->wiphy_registered = true;
2124
2125         ret = register_netdev(priv->dev);
2126         if (ret)
2127                 lbs_pr_err("cannot register network device\n");
2128
2129         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2130
2131         lbs_cfg_set_regulatory_hint(priv);
2132
2133         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2134         return ret;
2135 }
2136
2137 int lbs_reg_notifier(struct wiphy *wiphy,
2138                 struct regulatory_request *request)
2139 {
2140         struct lbs_private *priv = wiphy_priv(wiphy);
2141         int ret;
2142
2143         lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
2144                         "callback for domain %c%c\n", request->alpha2[0],
2145                         request->alpha2[1]);
2146
2147         ret = lbs_set_11d_domain_info(priv, request, wiphy->bands);
2148
2149         lbs_deb_leave(LBS_DEB_CFG80211);
2150         return ret;
2151 }
2152
2153 void lbs_scan_deinit(struct lbs_private *priv)
2154 {
2155         lbs_deb_enter(LBS_DEB_CFG80211);
2156         cancel_delayed_work_sync(&priv->scan_work);
2157 }
2158
2159
2160 void lbs_cfg_free(struct lbs_private *priv)
2161 {
2162         struct wireless_dev *wdev = priv->wdev;
2163
2164         lbs_deb_enter(LBS_DEB_CFG80211);
2165
2166         if (!wdev)
2167                 return;
2168
2169         if (priv->wiphy_registered)
2170                 wiphy_unregister(wdev->wiphy);
2171
2172         if (wdev->wiphy)
2173                 wiphy_free(wdev->wiphy);
2174
2175         kfree(wdev);
2176 }